xencrypt, xdecrypt, passwd2des - RFS password encryption
WARNING: Do not use these functions in new code. They do not achieve any type of acceptable cryptographic security guarantees.
The function passwd2des() takes a character string
passwd
of arbitrary length and fills a character array
key
of length 8. The array key
is suitable for use as
DES key. It has odd parity set in bit 0 of each byte. Both other
functions described here use this function to turn their argument
passwd
into a DES key.
The xencrypt() function takes the ASCII character
string secret
given in hex, which must have a length that is a
multiple of 16, encrypts it using the DES key derived from
passwd
by passwd2des(), and outputs the result
again in secret
as a hex string of the same length.
The xdecrypt() function performs the converse operation.
These functions are available in glibc since version 2.1.
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value |
passwd2des(), xencrypt(), xdecrypt() | Thread safety | MT-Safe |
The prototypes are missing from the abovementioned include file.
cbc_crypt(3)
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